General Questions

Which of the following is not a reason that operational data are difficult to read?

A). Non-duplicated data

B). Dirty data

C). Missing values

D). Non-integrated data

Answer : Option A

Question 18 :

We have Market Basket data for 1,000 rental transactions at a Video Store. There are four videos for rent -- Video A, Video B, Video C and Video D. The probability that Video D will be rented given that Video C has been rented is known as ________ .

A). the basic probability

B). support

C). lift

D). confidence

Answer : Option D

Question 19 :

One popular classification technique in Business Intelligence (BI) reporting is ________ .

A). cluster analysis only

B). regression analysis only

C). RFM analysis only

D). both cluster analysis and regression analysis

Answer : Option C

Question 20 :

We have done an RFM analysis on our customer data. Mary Jones has a score of "1 1 5". This series means that Mary ________ .

A). Has ordered recently, orders frequently, and places a large order when she orders.

B). Hasn't ordered recently, orders infrequently, but places a large order when she orders.

C). Has ordered recently, orders frequently, but doesn't place a large order when she orders

D). Hasn't ordered recently, orders infrequently, and doesn't place a large order when she orders.